Kinematically aligned robotic total knee arthroplasty
AssigneeZimmer, Inc.
InventorJoseph Maratt
Life of this patent
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Abstract
A system and method may use a robotic arm to perform a range of motion test for use in generating information related to kinematic alignment in a total or partial knee arthroplasty. A method may include controlling a robotic arm to move a tibia throughout a range of motion for a knee. A series of measurements of gap distance for the knee may be used to determine a tibial resection location for the tibia. The method may include updating a plan (e.g., 3D, preoperative) for an orthopedic procedure on the knee with the tibial resection location.
Claims20
A non-transitory machine-readable medium including instructions, which when executed by processing circuitry, cause the processing circuitry to perform operations to:
- transmit control signals to a robotic arm of a robotic surgical system, the control signals configured to control the robotic arm to move a tibia throughout a range of motion for a knee;
- obtain, from a sensor operably coupled to the robotic arm, at least one measurement of a gap distance for the knee at a location in the range of motion;
- determine, based on a model of the knee and the at least one measurement, a change to an implant size;
- update a plan for an orthopedic procedure on the knee with the change to the implant size;
- and
- control the robotic arm to move based on the updated plan.
A robotic surgical system comprising:
- a robotic controller to control a robotic arm to move a tibia throughout a range of motion for a knee;
- a sensor to obtain at least one measurement of a gap distance for the knee at a location in the range of motion;
- processing circuitry;
- and
- a machine-readable medium including instructions, which when executed by the processing circuitry, cause the processing circuitry to perform operations to:
- transmit control signals to the robotic arm of the robotic surgical system, the control signals configured to control the robotic arm via the robotic controller to move the tibia throughout the range of motion for the knee;
- obtain, from the sensor operably coupled to the robotic arm, the at least one measurement of the gap distance for the knee at the location in the range of motion from the sensor;
- determine, based on a model of the knee and the at least one measurement, a change to an implant size;
- update a plan for an orthopedic procedure on the knee with the change to the implant size;
- and
- control the robotic arm to move based on the updated plan.
A method comprising:
- transmitting, using processing circuitry of a robotic surgical system, control signals to a robotic arm of the robotic surgical system, the control signals configured to control the robotic arm to move a tibia throughout a range of motion for a knee;
- obtaining, from a sensor operably coupled to the robotic arm and using the processing circuitry of the robotic surgical system, at least one measurement of a gap distance for the knee at a location in the range of motion;
- determining, using the processing circuitry of the robotic surgical system, based on a model of the knee and the at least one measurement, a change to an implant size;
- updating, using the processing circuitry of the robotic surgical system, a plan for an orthopedic procedure on the knee with the change to the implant size;
- and
- controlling the robotic arm to move based on the updated plan.
Dependencies are inferred from the claim text.